"I've got a long list of things I want to do in this world, but nano-shrinking technology is near the top," Jack Kadere said.
"I can do that." Harrison Wells didn't hesitate. "I'll build it for you myself. Just bring my daughter back."
"Write down the equation. I'll go take a look."
Red lightning cracked through the room, and Jack Kadere was gone.
---
Earth Two was a mirror held at a crooked angle—same faces, inverted lives. Good people turned rotten. Rotten people turned respectable. Small divergences in circumstance rippled outward into entirely different futures.
On this Earth, Captain Cold was the mayor of Central City. Iris West carried a badge and a sidearm. Joe West sang jazz in nightclubs. The infamous Deadshot couldn't hit a man standing three feet in front of him. Caitlin Snow had become Killer Frost. Firestorm had become Deathstorm. Cisco Ramon had become Reverb. Harrison Wells had still built the particle accelerator, still created a generation of meta-humans—but every choice he'd made afterward had gone in a different direction.
An interesting world. A fresh one.
Jack hadn't planned to cross over this soon, but since the breach had worked on his first attempt, leaving immediately would've been a waste. He'd experience the place. Grab the nano-shrinking tech. Then decide what came next.
The sky over Earth Two carried a warm amber cast, as though the sun here burned at a different frequency. It lent everything a faintly unreal quality—familiar streets rendered in the color palette of a lucid dream. The air smelled the same as Central City on Earth One, exhaust and river water and asphalt cooling after a hot day, but the light made it feel foreign.
Same faces. Different people.
Jack remembered what happened in the original story when Barry Allen made this trip. Over here, Barry's doppelgänger was still a crime scene investigator with the Central City PD—but a spineless, selfish version of himself, and married to Iris. Iris had become a cop specifically to build a future for the two of them.
That part was harmless enough. The problem was what Barry did with the information.
He'd come to Earth Two for one reason: rescue Jesse Wells. Harrison Wells had been explicit about that. Get in, find Jesse, get out. The people here weren't his responsibility. But Barry had gotten drunk on the novelty of it. He'd slipped into his doppelgänger's life, played house with a version of Iris who loved him, let himself get emotional—and gotten this world's Joe West killed in the process. Then he'd dragged the mission sideways by insisting on helping Iris fight Killer Frost and Deathstorm, grandstanding about how these people were his family no matter which Earth he stood on.
That wasn't compassion. That was narcissism dressed up as heroism.
The result? Barry got himself captured by Zoom. If Cisco and the others hadn't flipped Killer Frost to their side, he'd have died on Earth Two and Jesse would have rotted in that cell. In the end he rescued her and made it home, but the collateral damage he'd scattered across this world was staggering—and all because he'd wanted to play the savior instead of doing the job.
If the delay had cost Jesse her life, Harrison Wells would have killed Barry himself.
Jack had no intention of repeating those mistakes.
A streak of yellow lightning tore through the streets of Earth Two's Central City, carving between buildings, past storefronts with subtly wrong signage, under a sky that was the wrong shade of warm. Jack ran without destination, mapping the city by feel, cataloging differences—
Hostility. Sharp and sudden, from above.
He recognized the energy signature before he saw the source. Nuclear fusion. Firestorm's attack method.
Deathstorm.
Jack stopped dead. A column of fire slammed into the road thirty feet ahead of him with a concussive BOOM, splitting the asphalt in a starburst of orange and black. Flames roared skyward, heat rolling outward in a visible wave that warped the air.
A figure descended through the smoke.
He was built like Ronnie Raymond—broad through the shoulders, six feet tall, athletic frame under a black leather jacket that had been scorched and re-scorched so many times the material had taken on a waxy, heat-treated sheen. His face was Ronnie's face, square-jawed and sharp-featured, but the expression was all wrong. Cold. Predatory. No trace of the earnest engineer Jack had known on Earth One. Flames licked along his forearms and shoulders, dying down as his boots touched the cracked pavement, leaving the air reeking of ozone and charred asphalt.
Firestorm's doppelgänger. Deathstorm.
This version was still first-generation—Ronnie Raymond merged with Martin Stein. But unlike Earth One's Firestorm, where both minds coexisted, Stein had been consumed long ago. The body belonged entirely to Ronnie.
Deathstorm stared at Jack with the flat appraisal of someone sizing up prey. "You're not The Flash." A smirk pulled at the corner of his mouth. "A new speedster. Zoom's going to love this."
He thought: Fresh meat. Zoom'll finally stop breathing down my neck if I bring him something shiny. Where the hell is Reverb—probably watching from somewhere, the paranoid little shit.
"Didn't expect you to be the welcoming committee." Jack tilted his head, unimpressed. "Your powers aren't particularly useful to me. Where's Reverb?"
"Looking for me?"
The voice was Cisco Ramon's—same pitch, same cadence—but the tone was stripped of every ounce of warmth Jack associated with Earth One's version. It slid out of the shadows like a blade being drawn.
Jack turned.
Cisco Ramon's doppelgänger walked out from behind a support column at the edge of the street. He wore his dark hair in tight braids that fell past his jaw, a pair of tinted goggles pushed up on his forehead, and a fitted leather jacket over a high-collared shirt. Same face as the Cisco who geeked out over superhero names in S.T.A.R. Labs—same soft features, same build, lean and compact—but the resemblance ended at the surface. This version carried himself like a man who'd learned exactly how dangerous he was and enjoyed the knowledge. His posture was loose, confident, the kind of relaxed that came from knowing nobody in the room could touch him.
Reverb.
The particle accelerator explosion had turned both versions of Cisco Ramon into meta-humans. The difference was timing. Earth One's Cisco hadn't awakened his abilities yet. Earth Two's Cisco had already mastered his—or begun to. He called the shots. Killer Frost and Deathstorm answered to him. And above Reverb, there was only Zoom.
Cisco's Vibe abilities were formidable even in their early stages—sensing past and future through physical contact, emitting concussive shockwaves. At full development, the power scaled into teleportation and interdimensional travel. Pushed far enough, it rivaled the Speed Force itself.
In the original timeline, Reverb and Deathstorm had nearly killed Barry Allen when he arrived on Earth Two. Zoom had executed them both for it—two vibrating hand strikes through the chest, punishment for damaging his property. If Reverb had survived long enough to keep developing, cracking interdimensional travel on his own would have been inevitable.
"Still one person missing," Jack said, glancing around. Deathstorm. Reverb. No Killer Frost. "You usually travel as a trio."
Reverb thought: He knows our team. Knows my name without being told. Another world's speedster—he didn't just stumble here. He came on purpose. If I can pull the method out of him, I won't need Zoom for anything.
Reverb studied Jack with open curiosity, his head cocked at an angle that mirrored Earth One's Cisco so precisely it was almost eerie.
"You know a lot about us. I'm curious." He took another step forward, boots crunching on shattered asphalt. "You're not The Flash. Central City doesn't have any other speedsters. But I can feel it—you're different. You're not from here." His eyes narrowed behind the tinted lenses. "You're a speedster from another world."
He let the observation settle, then smiled—thin, sharp, nothing like Cisco's grin.
"We haven't figured out how to breach between worlds yet. But you've already made the trip." Reverb spread his hands. "I'd very much like to know how."
"And I'd very much like to not tell you," Jack said.
Reverb's smile didn't waver.
"That's not how things work here. In my world, the rules are simple. You tell me what I want to know, and you walk away. Otherwise—" He let the silence finish the sentence.
"Why are we still talking?" Deathstorm stepped forward, flames igniting along both forearms, heat rippling off his fists in visible waves. "He's from another world. Let me break him in first."
He got two steps.
BANG.
Reverb pivoted and fired a shockwave point-blank into Deathstorm's chest. The blast hit like a cannon shot—Deathstorm's feet left the ground and he flew backward, crashing through the remains of a parked car and rolling across the pavement in a shower of broken glass. The concussive echo bounced off building facades and faded into the amber sky.
Reverb turned back to Deathstorm, his expression ice. "Touch your cranial nerves next time. Stand to the side and stay there."
Deathstorm picked himself up. Glass fell from his jacket in bright shards. He didn't argue. He didn't even make eye contact. He moved to the edge of the street and stood still, jaw clenched, flames extinguished.
Deathstorm thought: One of these days. One of these goddamn days I'm going to burn those braids off his skull. Not today. Not while he's watching.
Jack Kadere looked at Reverb—at the casual brutality, the absolute authority, the way Deathstorm folded without a word—and grinned wide enough to show teeth.
"Now that," he said, clapping once, "was cool."
Reverb's eyes stayed locked on Jack, calculating, hungry, the goggles catching the amber light as he took another slow step forward.